Update README.md

Bump version and tested WooCommerce version.
https://developer.woo.com/2023/12/12/woocommerce-8-4-0-released/

Author: lukecav

README.md

@@ -30,6 +30,9 @@ Run ```composer require lukecav/performance-improvements-for-woocommerce```
 
 ## Changelog
 
+**1.1.26**
+* Bump WooCommerce tested version.
+* 
 **1.1.25**
 * Bump WooCommerce tested version.